I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
hauteur hater hatter heater haughtier hatteria header hotter hooter hitter hetero headier hootier hetaera hetaerae heder hider heeder hetaira hoodier
auteur hauteur shouter uteri tauter suiter router putter pouter nutter neuter mutter muter quoter gutter goutier cutter cuter couture couter cautery future butter outer poutier reutter souter suture touter utter shutter